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Better Buy: Walmart Stock vs. Costco Stock

Parkev Tatevosian, CFAAug 16, 2026

Summary

Parkev provides a head-to-head comparison of Walmart and Costco, examining their financial health, operational efficiency, and current market valuations. Parkev observes that Walmart leads in total revenue at $725 billion, but Costco demonstrates superior efficiency by generating nearly half that revenue with only one-tenth the number of locations. Parkev notes that Costco dominates in metrics like Return on Invested Capital (22.64%) and inventory turnover (15.25), reflecting its strategy of high volume and member-only access.

Parkev highlights that both companies are trading at premium valuations, with Costco at a forward P/E of 41.7. Parkev finds it ironic that these brick-and-mortar businesses are now more expensive than Amazon relative to their earnings. Ultimately, Parkev argues that while these are excellent businesses, their low-to-mid single-digit growth prospects do not justify current prices. Parkev mentions that any price significantly lower than current levels would be a better entry point, as the current valuations are considered too high for the industry's typical margins.

Walmart (WMT): Parkev notes Walmart's massive scale and its successful expansion into e-commerce and advertising. Parkev prefers Walmart's convenience and lack of overcrowding compared to Costco, but believes the stock's valuation has nearly doubled from historical standards, making it too expensive to buy now.
Costco (COST): Parkev praises Costco for its exceptional efficiency and high inventory turnover, though Parkev dislikes the crowded shopping experience. Parkev points out that Costco's forward P/E of 41.7 is very high for a retailer and suggests that investors are paying too much of a premium at current levels.

Mentioned Stocks

WMT
Sentiment: HOLD

Reasoning: Parkev notes that Walmart is an excellent business with strong e-commerce and advertising momentum. However, Parkev states that the valuation has nearly doubled from historical standards and is currently too expensive given the single-digit growth expectations. Parkev would wait for a lower valuation before buying.

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COST
Sentiment: HOLD

Reasoning: Parkev acknowledges Costco as a highly efficient retailer with impressive ROIC and inventory turnover. Despite this, Parkev highlights that the forward P/E of 41.7 is very high and suggests the stock is trading at an excessive premium even compared to Amazon. Parkev advises waiting for a better price.

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